Analysis
-
max time kernel
150s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
-
submitted
08-09-2023 08:03
General
-
Target
8581a33bb410c7674705ca163c6f75ad.exe
-
Size
271KB
-
MD5
8581a33bb410c7674705ca163c6f75ad
-
SHA1
3dd6bb5a8786eb073a6f7d26454a8ddbffbbe48f
-
SHA256
104032d8993555a84679746069ad1f8c1365c4a27eaeec732fda76aa62da005a
-
SHA512
4519a93e98b555a4eac8c18cb61bd28c862d47d6036362f9776074ae897e621202ad80d28f83686bfe3d185081ebd19ac951183768851f3bf17a403c73624302
-
SSDEEP
6144:ymJUPTQVx/LACZmikqYGlJfOuwOFZ/QlUvt0NFQp/TDOkUFahk99:v6cLA0cqYd0FxQlU0Nup/TDOkUFahk9
Malware Config
Extracted
C:\info.hta
class='mark'>[email protected]</span></div>
http://www.w3.org/TR/html4/strict.dtd'>
Extracted
C:\users\public\desktop\info.hta
Signatures
-
Phobos
Phobos ransomware appeared at the beginning of 2019.
-
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Modifies boot configuration data using bcdedit 1 TTPs 4 IoCs
-
Renames multiple (320) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Deletes backup catalog 3 TTPs 2 IoCs
Uses wbadmin.exe to inhibit system recovery.
-
Modifies Windows Firewall 1 TTPs 2 IoCs
-
Drops startup file 3 IoCs
-
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Adds Run key to start application 2 TTPs 2 IoCs
-
Drops desktop.ini file(s) 64 IoCs
-
Suspicious use of SetThreadContext 2 IoCs
-
Drops file in Program Files directory 64 IoCs
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
-
Modifies Internet Explorer settings 1 TTPs 4 IoCs
-
Suspicious behavior: EnumeratesProcesses 64 IoCs
-
Suspicious use of AdjustPrivilegeToken 64 IoCs
-
Suspicious use of WriteProcessMemory 64 IoCs
-
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
-
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exe"C:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exeC:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exe2⤵
- Drops startup file
- Adds Run key to start application
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exe"C:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exeC:\Users\Admin\AppData\Local\Temp\8581a33bb410c7674705ca163c6f75ad.exe4⤵
-
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"3⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
-
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
-
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"3⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\netsh.exenetsh advfirewall set currentprofile state off4⤵
- Modifies Windows Firewall
-
C:\Windows\system32\netsh.exenetsh firewall set opmode mode=disable4⤵
- Modifies Windows Firewall
-
C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"3⤵
- Modifies Internet Explorer settings
-
C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"3⤵
- Modifies Internet Explorer settings
-
C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"3⤵
- Modifies Internet Explorer settings
-
C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "F:\info.hta"3⤵
- Modifies Internet Explorer settings
-
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"3⤵
-
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
-
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵
-
C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
143.1MB
MD57060025d29e87f9228616807e4f56fbf
SHA168a91f682794ed2c36bc5e08ec909770f6ed056b
SHA2563b1a2f2d3d0e7a0eb3e35012ff5405dece1a88878b1cad3fd94f28e52afd27e6
SHA5125e9e166b7e1dd912ef31615bf1eea3fd107030e171b13056eb91a3edac5f37323f2c3d2d4c114c220400fece91dbe1b96d4da04447b7dcfa6032bcbcadcf3dd5
-
Filesize
5KB
MD5088e93e3f57863e4be055b3609e8eeed
SHA194c677fd05b4082368bab84b64aed545b4bce695
SHA256df4d6abef4d7375041038fa3ea4b876b0e25a4b13511b93134154aad990a4273
SHA512887a245cc07f157bce37ecff40201523c70033549b67e4d007e2e4f1933826d3b39f22bdf84669dfd08fb4e10f95e1d39bca7a83535239b50bd938665f92a396
-
Filesize
5KB
MD5088e93e3f57863e4be055b3609e8eeed
SHA194c677fd05b4082368bab84b64aed545b4bce695
SHA256df4d6abef4d7375041038fa3ea4b876b0e25a4b13511b93134154aad990a4273
SHA512887a245cc07f157bce37ecff40201523c70033549b67e4d007e2e4f1933826d3b39f22bdf84669dfd08fb4e10f95e1d39bca7a83535239b50bd938665f92a396
-
Filesize
5KB
MD5088e93e3f57863e4be055b3609e8eeed
SHA194c677fd05b4082368bab84b64aed545b4bce695
SHA256df4d6abef4d7375041038fa3ea4b876b0e25a4b13511b93134154aad990a4273
SHA512887a245cc07f157bce37ecff40201523c70033549b67e4d007e2e4f1933826d3b39f22bdf84669dfd08fb4e10f95e1d39bca7a83535239b50bd938665f92a396
-
Filesize
5KB
MD5088e93e3f57863e4be055b3609e8eeed
SHA194c677fd05b4082368bab84b64aed545b4bce695
SHA256df4d6abef4d7375041038fa3ea4b876b0e25a4b13511b93134154aad990a4273
SHA512887a245cc07f157bce37ecff40201523c70033549b67e4d007e2e4f1933826d3b39f22bdf84669dfd08fb4e10f95e1d39bca7a83535239b50bd938665f92a396
-
Filesize
5KB
MD5088e93e3f57863e4be055b3609e8eeed
SHA194c677fd05b4082368bab84b64aed545b4bce695
SHA256df4d6abef4d7375041038fa3ea4b876b0e25a4b13511b93134154aad990a4273
SHA512887a245cc07f157bce37ecff40201523c70033549b67e4d007e2e4f1933826d3b39f22bdf84669dfd08fb4e10f95e1d39bca7a83535239b50bd938665f92a396
-
Filesize
6.9MB
-
Filesize
6.9MB
-
Filesize
256KB
-
Filesize
280KB
-
Filesize
296KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
4KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
76KB
-
Filesize
6.9MB
-
Filesize
296KB
-
Filesize
304KB
-
Filesize
208KB
-
Filesize
256KB
-
Filesize
280KB
-
Filesize
6.9MB
-
Filesize
76KB
-
Filesize
4KB